{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{4}{c}}
\toprule
            &\multicolumn{1}{c}{Compliance}&\multicolumn{3}{c}{Both Present/Absent}                          \\\cmidrule(lr){2-2}\cmidrule(lr){3-5}
            &\multicolumn{1}{c}{\specialcell{All\\(1)}}&\multicolumn{1}{c}{\specialcell{All\\(2)}}&\multicolumn{1}{c}{\specialcell{Below 50th\\(3)}}&\multicolumn{1}{c}{\specialcell{Below 25th\\(4)}}\\
\midrule
& \multicolumn{4}{c}{\textit{Panel A:} Contemporaneous Effect (t)} \vspace{0.2em} \\ Neighbor $\times$ Different Party & .0051 & .0035 & .0072 & .0035 \\ (proximity effect on bipartisanship) & [.057]* & [.24] & [.027]** & [.24] \\ & \{.057\}* & \{.23\} & \{.029\}** & \{.23\} \\ \\[-5pt] Neighbor $\times$ Same Party & .0036 & .0032 & .0068 & .0032 \\  & [.57] & [.61] & [.21] & [.61] \\ & \{.58\} & \{.62\} & \{.3\} & \{.62\} \\ \\[-5pt] Observations & 35259 & 35259 & 35205 & 35259 \\ \hline \vspace{-8pt} & & & & \\ & \multicolumn{4}{c}{\textit{Panel B:} One Year Later (t+1)} \vspace{0.2em} \\ Neighbor $\times$ Different Party & .0008 & .0012 & -.0012 & .0012 \\ (proximity effect on bipartisanship) & [.86] & [.81] & [.81] & [.81] \\ & \{.81\} & \{.74\} & \{.78\} & \{.74\} \\ \\[-5pt] Neighbor $\times$ Same Party & .011 & .013 & .016 & .013 \\  & [.19] & [.13] & [.091]* & [.13] \\ & \{.13\} & \{.078\}* & \{.043\}** & \{.078\}* \\ \\[-5pt] Observations & 21589 & 21589 & 21589 & 21589 \\ \hline \vspace{-8pt} & & & & \\ & \multicolumn{4}{c}{\textit{Panel C:} Previous Year (Placebo) (t-1)} \vspace{0.2em} \\ Neighbor $\times$ Different Party & .0013 & .00099 & .00026 & .00099 \\ (proximity effect on bipartisanship) & [.68] & [.77] & [.94] & [.77] \\ & \{.73\} & \{.81\} & \{.95\} & \{.81\} \\ \\[-5pt] Neighbor $\times$ Same Party & .0044 & .0046 & .0059 & .0046 \\  & [.59] & [.59] & [.52] & [.59] \\ & \{.57\} & \{.55\} & \{.47\} & \{.55\} \\ \\[-5pt] Observations & 21638 & 21638 & 21638 & 21638 \\ \hline Session $\times$ Party Pair $\times$ Strata FE & Y & Y & Y & Y \\ Outcome Mean & .57 & .63 & .58 & .63 \\ Outcome S.d. & .13 & .14 & .14 & .14 \\ \toprule \multicolumn{5}{p{15.4cm}}{\footnotesize \textit{Notes:} Each panel shows the estimates from four linear regressions. Compliance is the proportion of times the two MPs in a pair vote the same way in a given session. Both Present/Absent is the proportion of times the two MPs in a pair are either both absent or both present for a vote in a given session. Below 50th/25th votes are votes in which the share of MPs voting the modal vote is less than the median/25th percentile among all votes. Neighbor is a dummy variable equal to one if the MPs in the pair are randomly assigned to sit next to each other during that session. Same Party is equal to one if both MPs in the pair are in the same party for that session. Dyadic-robust p-values are in square brackets. Randomization inference p-values (1000 draws) are in curly brackets. Special sessions and a short session (2017) are excluded. For lead and lag specifications, sessions are also dropped where lead/lag would be a special/short session or a session in a different parliamentary term. Strata FE are dummy variables for whether both MPs in a pair were pre-assigned seats, one MP in a pair was pre-assigned a seat, or neither MP in a pair was pre-assigned a seat. Outcome Mean and Standard Deviation are for the sample included in the Panel A regressions. *** p<0.01, ** p<0.05, * p<0.1.} \\ \end{tabular} }
